DE7725261U1 - FLANGE PAIR FOR CONNECTING PIPES, FITTINGS OR DGL - Google Patents

Description

Rosemarie Schnell (ξ eb. Ehrich
Hans-Böckler-Straße k, 6 ° Ί'Η Neu-Isenburg

Pair of flanges for connecting pipes, fittings or the like. ^;

The invention relates to a pair of flanges for connecting pipes, fittings or the like to a central one Passage channel for one medium and several in a ring around the central passage channel arranged passage channels for a in an outer shell space of the pipes, fittings or the like. guided accompanying medium, in particular heating or cooling medium, and with a conveying medium and the Accompanying medium against each other and against the environment sealing seal between the interconnected Flanges.

Such flange connections are known (DT-OS 2 205 U83). Because of the seal between the The conveyed medium and the accompanying medium as well as between

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In most cases, this and the environment are very demanding, when using the known flange connection it was difficult to find sealing features that not only ensured a reliable sealing effect under test conditions and with careful assembly, but also under the rough working conditions in the assembly of pipeline systems, for example in the petrochetni see industry, still guaranteed a sufficient sealing effect. For this purpose, for example, Nut and Fedr seals were used, such a seal being arranged between the central passage channel and the ring of outer sealing channels and another such seal outside this ring of through channels. With careful execution and assembly, a sufficient sealing effect could be achieved; This tongue and groove seals are, however, ge ^ s damage so vulnerable that when used in the ordinary rough installer a necessarily reliable sealing effect could not be guaranteed. In particular, bex pumping media and accompanying media, which are dangerous if they come together or if they escape into the environment, will not accept the remaining uncertainty of the sealing effect in any case.

The object of the invention is therefore to design a flange connection of the type mentioned so that a a highly reliable sealing effect is achieved between the interconnected flanges, with

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the risk of damage to the flanges to be trained sealing elements should be avoided.

This noticeable problem is solved in that at least one of the interconnected flanges in the area of the passage channels for the accompanying medium has a circular ring ^; Has a shaped recess, in which these passages open, and that a circular projection of the other flange protrudes into the circular recess and seals in the ring surface containing the ring of passages for the accompanying medium.

While the aim so far has been two seals on both sides of the rim of outer passageways to be arranged, in the present invention, the seal is intentionally inserted into the outer passage Uing surface containing the cannula, i.e. the through- canals are passed through the seal. This not only achieves sealing of these outer passageways on all sides, but also at the same time a secure seal between the central passage channel and the outer passage channels.

Since the poetry of one lying in the depression Ring surface is taken over, damage during assembly is largely excluded. the Risk of damage to the circular The protrusion on one of the two flanges is also very small because it is the protrusion is not a narrow and therefore easily damaged spring, but a relatively broad annular protrusion, the

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-li seals with its entire face, so that damage to an edge or a small area is also possible. the sealing effect is not impaired.

Compared to all flange connections where between Front flange flat sealing rings inserted with the medium in the central passage channel stand in direct contact, ha ·; the flange connection according to the invention has the advantage that the sealing area and thus also a sealing ring that may be arranged there · ;; the pumped medium nichi are immediately exposed because the seal in the circular recess, which in turn is protected against the central passage channel.

Preferably, the recess and the projection have flat, parallel sealing surfaces that are directly or lie sealingly against one another with the interposition of a sealing ring, the sealing ring having a wreath of passage openings for the accompanying medium; the annular projection can be made in one piece with one of the both flanges designed as per In this embodiment, the two are to be connected to one another Flanges made relatively simple. Except for one if used, pierced Sealing ring and the connecting screws are not further parts required for the flange connection.

In a further development of this inventive concept, provision can also be made for the annular projection of an insert ring with a ring of passage openings

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to form for the accompanying service, so that then all The flanges used can be designed uniformly, if necessary with the circular connection recess, in which the back ring fits tightly.

The invention is illustrated below using exemplary embodiments explained in more detail, which are shown in the drawing.

Figures Λ-h each show, in a longitudinal section, different embodiments of the flange connection according to the invention; FIG. 5 shows a section along line AA Jn FIG. 1.

The flange connections shown each have two flanges 1, 2, which are, for example, welded flanges that are welded to double-jacket pipes (not shown): in which an ionizing medium is fed into a tiar.telraurii surrounding the inner tube, for example D-mpf, which is used to heat the conveying medium,

For example: ice is a liquid that is partially liquid at normal temperature. The Fleuisclie 1,2 has been screwed through! 3 connected to one another and each have a central passage channel h through which the conveying medium flows. Several parallel to the.i central j) urc; itri 'et: ' .anal h verlaifendc Durch tr: i ttshani Ie ^: j for a companion; -nedium are arranged in a ring around the central Durciitrit Lülcanal k and mü.'uleri with the, V: execution examples according to FIGS. 1-3 in the flange 2 in a circular ring-shaped recess 6 in an annular shape lying parallel to the end face of the flange.

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In the embodiment shown in FIG faces the flange. 1 an annular projection 7, in its circular end face, which are also parallel to the flange surface lies, el sr wreath of outer passageways

5 mouths ϊ. if you can see from Fig. 1, the align outer passage channels 5 of the two flanges 1,2 in the amiBuilt state with each other, so that the accompanying medium flows unhindered through the cannula 5 :! can. At the junction of the two Flanges 1, 2, the area around channel 3 is full— stiindi sealed because the face of the projection 7 clearing against the curses of the depression

6 is pressed. In all other areas, 1.2 remains between the end faces of the two flanges a gap so that the screws 3 exerted

] Force acts completely on the ring-shaped DicatfIV.che.

Through this complete sealing in; Area of

^{j outer passageways r} j> arranged in a ring

is at the same time a complete seal of the central passage channel h to the outer channels 5 and after

• caused externally.

The embodiment : I Figure 2 differs

; of the previously described Av.3führungT7.form only

by the fact that between the face of the ki jis

annular projection 7 and the riiigiläne the In a circular recess 6, a sealing ring 8 is inserted is, the Γ irchtriitsopenings aligned with the channels 5 9 show. The sealing ring 8 can consist of a conventional wick material.

In the embodiment according to. Figure 3 are both Flanges 2 and 1 'have the same design, i.e. both flanges 1', 2 have the circular recess 6 on. An insert ring: 10 is in the circular ring-shaped Depression 6 of one flange 1 'is inserted and thus forms the one in the embodiments according to the figures 1 and 2 described projection 7. The Sinlagerring protrudes into the recess 6 of the other flange 2; With its two end faces, the insert ring 10 lies sealingly on the annular surfaces of the two depressions on. As shown in Figure 3, the insert ring 10 also has Durclitritfsöf openings 1 1 for in the channels 5 accompanying medium.

In Figure k , an embodiment is shown in which the two flanges 1 ″ • and 2 ″ to be connected to one another each have an annular recess 6 ″, the side walls 12 of which are inclined in such a way that the recesses 6 '' rejuvenate towards the bottom. An insert ring 13, which, like the insert ring 10, has a substantially rectangular profile, lies with one edge on each of the two side walls 12 of the two recesses 6 ^{11 in a} sealing manner. This insert ring 13 also has passage openings Ik for the accompanying medium flowing in the channels 5.

In the embodiments according to FIGS. 2-k, in which a ring S, 10 or 13 is located between the two flanges, a centering element is inserted into at least one of the passage channels for assembly in order to ensure that the Kan Ie and the passage openings $, 11 or Ik are aligned with each other * If this (not shown) centering f. Tt

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is tubular, it can also remain in the flange connection after assembly.

In the depressions 6 ″ which are trapezoidal in cross section Tig. ^ Can instead of the insert ring, which is rectangular in cross-section an insert ring can also be inserted, the side surfaces of which (on the inside diameter and on the outside diameter) face the inclined Side walls of the recesses 6 ″ are adapted or convex are executed.

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Claims (5)

Protection claims Pair of flanges for connecting Roliren, fittings or the like, with a central passage for a conveying medium and several passages arranged in a ring around the central passage for an accompanying medium, in particular irrigation or the like, guided in an outer shell of the pipes, fittings or the like Cooling medium, and with a seal between the flanges connected to one another, which seals the conveyed medium and the accompanying medium against each other and against the environment, characterized in that at least one of the flanges (2, 1 ', 1 ¹¹ , 2 ^{! I} ) connected to one another in the area of the passage channels (5) has an annular recess (6, 6 ¹¹ ) for the accompanying medium, in which these passages (5) open, and that an annular projection (7) of the other flange (1) protrudes into the annular recess and ^. n the ring surface containing the ring of passage channels (5) for dt &: accompanying medium seals. 2. pair of flanges according to claim 1, characterized in that the recess (6) and the projection (7) have flat, parallel sealing surfaces which either directly or with an intermediate layer ;. Sealing ring (8) are sealingly against one another, and that if necessary the sealing ring (8) has a wreath of Has passage openings (9) for the accompanying medium . - 10 - 7725261 03/02/78 ■ 114 »II» 3. pair of flanges according to claim 1, characterized in that that the annular projection (7) is formed in one piece with one of the two flanges (1). k. Flange pair according to Claim 1, characterized in that the circular projection is formed by an insert ring (10, 13) with a ring of passage openings (11, 1 * 1 ·) for the accompanying medium, that both flanges (i ^f , 2; 1 ¹¹ , £ ^lf ) have an annular recess (6.6 " ), and that the insert ring (10, 13) rests in a sealing manner in both annular recesses. 5. Pair of flanges according to claim h, characterized in that the two circular depressions (6 ^fl ) taper towards the base and the insert ring (13) with an edge on each of the two side surfaces (12) of each circular depression (6 ¹¹ ) sealingly is present. 7725261 02.0178